Relatively expensive, but worth every penny. This is a serious piece of kit, made out of heavy duty nylon with a cordura base. I currently own an 80L model which is more than capable of storing an entire set of winter paddling kit, inc. throw bags etc, etc… Probably no different to many other bags except carrying all that kit can be a pain. The NF bag comes with two well padded rugsack type straps which allows the bag to worn rucksack style. This is extremely comfortable as the bag molds to the shape of your back.